INT 16 U - PCIBM PC Tools v9 DSKLIGHT - INSTALLATION CHECK AX = FFA3h BX = FFA3h CX = FFA3h Return: BX = CX = 5555h if installed AX = resident code segment Program: DSKLIGHT is a TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user. The name comes from the name of the DOS function call used to remain in memory after termination. included with PCIBM PC Tools v9+ which displays a disk- access indicator on the screen; in v7 and v8, this function was provided by DATAMON Note: DSKLIGHT chains to the previous handler if BX or CX is not FFA3h